Silica Shield

Salic Signal contains salicylic acid a plant-specific hormone derived from willow bark extract. 

When Salicic acid is administered to the plant, it will activate the plant's own immune system. 

In the past, willow bark was chewed by indians for it's medicinal properties. This is not the same for plants, it is not a painkiller. For more information on scientific research on the effects of the use of Salicylic acid in plants, please refer to the knowledge part of this website.